Some versions of Pillow seem to be incompatible with PY2APP

Traceback (most recent call last):
  File "setup_mac.py", line 395, in <module>
    prepare_py2app_dist()
  File "setup_mac.py", line 339, in prepare_py2app_dist
    setup_requires=['py2app'])
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/core.py", line 151, in setup
    dist.run_commands()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 659, in run
    self._run()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 865, in _run
    self.run_normal()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 959, in run_normal
    self.create_binaries(py_files, pkgdirs, extensions, loader_files)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/py2app/build_app.py", line 1214, in create_binaries
    platfiles = mm.run()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/macholib/MachOStandalone.py", line 105, in run
    mm.run_file(fn)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/macholib/MachOGraph.py", line 84, in run_file
    self.scan_node(m)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/macholib/MachOGraph.py", line 110, in scan_node
    m = self.load_file(filename, caller=node)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/macholib/MachOGraph.py", line 93, in load_file
    newname = self.locate(name, loader=caller)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/macholib/MachOStandalone.py", line 23, in locate
    newname = super(FilteredMachOGraph, self).locate(filename, loader)
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/macholib/MachOGraph.py", line 49, in locate
    loader=loader.filename)
TypeError: dyld_find() got an unexpected keyword argument 'loader'